package thread_01;

import java.util.concurrent.Semaphore;

public class Demo43 {
    private static int count = 0;
    public static void main(String[] args) throws InterruptedException {
        Semaphore semaphore =new Semaphore(1);
        Thread t1 = new Thread(() ->{
            try {
                    for (int i = 0; i < 50000; i++) {
                    semaphore.acquire();
                    count++;
                    semaphore.release();
                    }
            } catch (InterruptedException e) {
                    throw new RuntimeException(e);
            }

        });
        Thread t2 = new Thread(() ->{
            try {
                for (int i = 0; i < 50000; i++) {
                    semaphore.acquire();
                    count++;
                    semaphore.release();
                }
            } catch (InterruptedException e) {
                throw new RuntimeException(e);
            }

        });
        t1.start();
        t2.start();
        t1.join();
        t2.join();
        System.out.println("count = "+count);
    }
}
